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34 results about "Expansive clay" patented technology
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Expansive clay is a clay soil that is prone to large volume changes (swelling and shrinking) that are directly related to changes in water content. Soils with a high content of expansive minerals can form deep cracks in drier seasons or years; such soils are called vertisols. Soils with smectite clay minerals, including montmorillonite and bentonite, have the most dramatic shrink-swell capacity.
Integrated porous rigid wall and flexible wall permeability test device for soils
InactiveUS20100089124A1Inhibit swellingMaterial strength using tensile/compressive forcesPermeability/surface area analysisField conditionsRigid wall
An apparatus for measuring permeability accurately in expansive clay and non-expansive soils is provided. The apparatus includes hollow porous stone cylinders which prevent the sample from bulging and at the same time allow application of confining pressure on the soil sample enclosed in a flexible membrane, which simulates the field condition and allows for application of back pressure to aid in saturation. The apparatus also allows for accurate comparison of hydraulic characteristics of swelling clays with fluids of various dielectric and other properties. The apparatus can also be used to consolidate the sample either three dimensionally or in one direction and perform permeability tests as well as find out the consolidation characteristics of the sample.
Owner:NORTH DAKOTA STATE UNIV RES FOUND
Amphiprotic-Gemini type cationic composite adsorbent, and preparation method thereof
ActiveCN103752274AIncrease organic carbon contentImprove adsorption capacityOther chemical processesWater contaminantsClay mineralsBetaine
The invention discloses an amphiprotic-Gemini type cationic composite adsorbent, and a preparation method thereof. The amphiprotic-Gemini type cationic composite adsorbent is an expansive clay mineral modified by an amphiprotic surfactant and a Gemini type cationic surfactant; the amphiprotic surfactant is alkyl dimethyl betaine, and alkyl carbon chain of alkyl dimethyl betaine possesses 10 to 18 carbon atoms; the Gemini type cationic surfactant is an alkyl quaternary ammonium gemini surfactant, and alkyl carbon chain of the alkyl quaternary ammonium gemini surfactant possesses 10 to 18 carbon atoms. Adsorption capacities of the amphiprotic-Gemini type cationic composite adsorbent obtained via modification on organic pollutants and heavy metal anions are improved, so that a problem that absorption capacity of amphiprotic organic modified soil on pollutants and heavy metal anions is poor is solved. The preparation method of the amphiprotic-Gemini type cationic composite adsorbent is simple, and operation is convenient.
Owner:NORTHWEST A & F UNIV
Foaming agent for soil pressure balance shield machine
The invention belongs to the technical field of foaming agents and provides a foaming agent for a soil pressure balance shield machine. The foaming agent solves the problem that the existing domestic foaming agent produces foam having performances such as uniformity, stability, lubricity and permeability which cannot completely satisfy foam requirements in shield construction and has limited adaptability. The foaming agent is prepared from sodium dodecyl sulfate, sodium alcohol ether sulphate, sodium alpha-olefin sulfonate, a modified silicone resin polyether emulsion and water according to a certain ratio. The foaming agent has stable foaming performances, good foaming effects and long foam stabilization time, realizes good improvement on muck in hard plastic and soft plastic expansive clay, improves plastic flowing and water sealing of excavated soil, prevents soil densification adhesion, prevents caking of a cutterhead and keeps soil warehouses pressure by bubble support. The foaming agent utilizes easily available raw materials having low prices so that a construction cost is reduced effectively. The foaming agent utilizes bulk chemical products and has no pollution and no toxic or side effect on muck and the surrounding environment.
Owner:CHINA RAILWAY NO 3 GRP CO LTD
Structure and method for processing black cotton soil embankment with impervious geotextiles
The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.
Owner:SOUTHEAST UNIV
Anti-seepage composite barrier
ActiveCN104499510ASolve the problem of circumventionEasy constructionProtective foundationGeomembraneWater soluble
The invention discloses an anti-seepage composite barrier, which comprises an anti-bypass seepage part and an anti-seepage layer, wherein the anti-bypass seepage part comprises a water soluble polymer membrane and expansive clay, the expansive clay is packaged in the water soluble polymer membrane, a groove is formed in the surface of the anti-bypass seepage part, and the bottom part of the anti-seepage layer is embedded in the groove of the anti-bypass seepage part. The anti-seepage composite barrier has the advantages that the construction is simple, the anti-seepage effect is good, and the problem of bypass seepage at the connecting part of a HDPE (high-density polyethylene) geomembrane and an underground impervious layer is solved.
Owner:BEIJING GEOENVIRON ENG & TECH
Use of iron ore agglomerates for acid gas removal
A regenerable sorbent for the removal of acid gas from a fluid stream. The regenerable sorbent is made from raw materials such as iron mineral, expansive clay and starch. Acid gas is removed from the fluid stream by a process where the raw materials are obtained, crushed, sifted, possibly pelletized, calcined and contacted with the fluid stream containing the acid gas.
Owner:INTREVEP SA
Method for preparing organic modified clay for removing organic pollutants from wastewater
InactiveCN104722273AImprove adsorption capacityEfficient removalOther chemical processesWater/sewage treatment by sorptionLiquid ratioOrganoclay
The invention discloses a method for preparing organic modified clay by using a gemini quaternary ammonium salt surfactant and expansive clay. The organic modified clay is used for removing organic pollutants from wastewater. The preparation method concretely comprises the following steps: mixing the expansive clay obtained after drying, crushing and sieving with a 20-100 mesh sieve with a gemini quaternary ammonium salt surfactant solution according to a solid / liquid ratio of 1:100-1:300, stirring at 60-80DEG C for 18-48h, centrifuging to obtain a product, drying the product at 80DEG C, grinding, and sieving by a 100 mesh sieve to prepare organic modified montmorillonite. Compared with traditional surfactant modified organic clay, the gemini quaternary ammonium salt surfactant organic modified clay has the advantages of high adsorption efficiency of the organic pollutants and substantially enhanced adsorption ability, and can be used in treatment of the organic pollutants in wastewater, or in refuse dump, oil depots, underground water areas and other occasions as a cutoff wall addition material.
Owner:JIANGNAN UNIV
Composition and method for roads, parking lots, and driving surfaces
InactiveUS20140356526A1High viscosityPrevent flocculationIn situ pavingsSingle unit pavingsFlocculationPolymer science
A method of producing a cationic asphalt slurry composition which can be used as an asphalt paving sealer or as a paving or repair composition. In the method and composition, latex and other polymers are used to build viscosity and a pH buffering filler is added to prevent flocculation. Consequently, the cationic composition can be stored without irreversibly settling or separating, and without breaking for several days prior to use. In addition, non-expansive clay and a polar polymer hardening agent are used so that, when applied, the composition will set and develop strength very quickly.
Owner:INGEVITY SOUTH CAROLINA
Coal slime argillization inhibition method based on adjustment and control of solution chemical properties
InactiveCN105903547AImprove settlement performanceImprove filtering effectSolid separationCyclic processMagnesium salt
The invention discloses a coal slime argillization inhibition method based on adjustment and control of solution chemical properties. Inorganic salt is utilized to change the chemical properties of water body solution during the coal washing process so as to inhibit clay argillization and coal slime argillization in coal. The coal slime argillization inhibition method comprises the following step: adding an argillization inhibitor, along with supplementary water, in a coal washing system, wherein the adding site of the argillization inhibitor is a water tank of supplementary water of a coal preparation plant; the argillization inhibitor is one selected from natural gypsum, halogen piece or halogen powder of magnesium salt, or industrial high-salt waste water; the adding amount of the argillization inhibitor ensures that the conductivity of coal slime water is greater than or equal to 1.5*10<3> [mu]s / cm during the entire cyclic process. The argillization inhibitor added during the coal washing process can effectively prevent clay particles in coal from hydration swelling and dispersion and has the effects that the argillization process of coal slime is blocked, and the settling property of coal slime water and the dehydration property of coal slime are improved. The coal slime argillization inhibition method has the following advantages: clay and coal slime in coal are prevented from argillization from source; the method is simple and practicable, remarkable in effect, and suitable for washing of coal containing expansive clay.
Owner:CHINA UNIV OF MINING & TECH
Phase-changing energy-storage composite material for building and preparation process thereof
InactiveCN1303181CLow costIndustrialized production transformation is easy to realizeHeat-exchange elementsParaffin waxExpansive clay
The presnt invention relates to a phase-changed energy storage composite material for building. Said invention uses the air-setting or hydraulic binding materials of gypsum and cement, etc. as base body, in which the porous material aggregates of expansive clay, etc. are dispersed, and in the porous material aggregates the organic phase-change materials of paraffin wax or butyl stearate, etc. are stored. Said invention adopts the vacuum impregnation method to prepare phase-change energy-storing aggregate firstly, then utilizes the conventional method for making building material to prepare the invented phase-change energy-storing composite material.
Owner:TONGJI UNIV
Composition and method for roads, parking lots, and driving surfaces
ActiveCN104292860AHigh viscosityHigh solid contentLiquid surface applicatorsIn situ pavingsFlocculationEngineering
A method of producing a cationic asphalt slurry composition which can be used as an asphalt paving sealer or as a paving or repair composition. In the method and composition, latex and other polymers are used to build viscosity and a pH buffering filler is added to prevent flocculation. Consequently, the cationic composition can be stored without irreversibly settling or separating, and without breaking for several days prior to use. In addition, non-expansive clay and a polar polymer hardening agent are used so that, when applied, the composition will set and develop strength very quickly.
Owner:INGEVITY SOUTH CAROLINA
Protective wax for solid wood furniture and preparation method thereof
InactiveCN109207063AImprove protectionExtended service lifeWax coatingsDrying oil coatingsVegetable oilPattern perception
The invention discloses a protective wax for solid wood furniture, wherein the protective wax is composed of the following components by the weight percentage: 8-15% of linseed oil, 6-12% of castor oil, 18-25% of tung oil, 8-15% of rape seed oil, 5-8% of beewax, 6-10% of Brazil palm wax, 1-3% of lecithin, 1-2% of an ultraviolet absorber, 1-3% of iron oxide, 0.5-0.8% of an emulsified petroleum asphalt emulsion, 15-25% of expansive clay, 1-2% of an antistatic agent, and the balance a surfactant. A variety of natural vegetable oils are mixed to synthesize natural plant wax which has better protection effect on the solid wood furniture; the emulsified petroleum asphalt emulsion is added and matched with micron-grade iron oxide, a quite good waterproof effect can be played, the elasticity of wood is increased, the formed color has unique pterocarpus santalinus pale violet red due to special color matching, and the perception of the solid wood furniture is significantly enhanced.
Owner:湖州赛德新材料科技有限公司
High strength external wall heat insulation board and preparation technology thereof
InactiveCN108929095AStress reliefImprove carrying capacityCeramic shaping apparatusFoam concreteSlag
The invention discloses a high strength external wall heat insulation board and a preparation technology thereof. The high strength external wall heat insulation board is characterized by comprising the following raw materials by weight: 22-32 parts of portland slag cement, 16-26 parts of quicklime, 14-20 parts of quartz sand, 22-28 parts of hydrogen peroxide, 10-20 parts of steel slag, 14-20 parts of sawdust, 22-28 parts of expansive clay, 10-20 parts of fly ash, 12-20 parts of dolomite powder, 12-20 parts of paraffin powder, 12-22 parts of dihydrogen phosphate, 12-18 parts of cement powder,12-18 parts of water glass, 10-16 parts of calcium oxide, 9-16 parts of foam polyurethane, 6-12 parts of aerogel, 6-12 parts of phenol formaldehyde resin, and 15-25 parts of foam concrete. According to the high strength external wall heat insulation board and the preparation technology thereof, steel slag, sawdust, dolomite powder and other assistants are added on the basis of portland slag cement, expansive clay, foam concrete and the like, the high strength external wall heat insulation board has the characteristics of high strength, good heat insulation effect and light weight, can bear high pressure, also has simple preparation process, is low in product cost, and can be applied and promoted on a large scale.
Owner:定远县双远新型建筑材料厂
External-separation and internal-discharge type weak expansive soil surface slope treatment device and construction method thereof
PendingCN113026666AEasy constructionEasy to operateSewerage structuresClimate change adaptationSoil scienceExpansive clay
The invention discloses an external-separation and internal-discharge type weak expansive soil surface slope treatment device, and relates to the field of slope treatment of projects such as water conservancy, roads and bridges. The device comprises a weak expansive soil layer, an internal drainage layer and an external replacement layer; the internal drainage layer comprises a drainage blind ditch and a drainage pipe; and the external replacement layer comprises a weak expansive soil step layer and a cement modified soil layer. According to the external replacement layer, surface expansive soil of a slope body is replaced and filled with non-expansive clay with a certain thickness, so that the water content of the lower expansive soil body is not violently changed, construction is simple, operation is easy, and the effect is good. The invention further relates to a construction method of the external-separation and internal-discharge type weak expansive soil surface slope treatment device.
Owner:CHANGJIANG SURVEY PLANNING DESIGN & RES
Environment-friendly pressure-reducing injection-increasing multi-twin active agent and preparation method thereof
InactiveCN110776891AHigh positive charge densityInhibit swellingDrilling compositionActive agentEnvironmental engineering
The invention provides an environment-friendly pressure-reducing injection-increasing multi-twin active agent and a preparation method thereof, wherein the environment-friendly pressure-reducing injection-increasing multi-twin active agent comprises, by mass, 0.01-0.5% of a polyoxyethylene copolymer resin, 2-45% of dimethyl diallyl ammonium chloride, 5-20% of an organic guanidine compound, 4-16% of a quaternary ammonium salt, 0.1-0.6% of a pH regulator, 0.1-0.6% of a cloud point regulator, and the balance of water. According to the invention, with the environment-friendly pressure-reducing injection-increasing multi-twin active agent, the hydrated expansive clay in stratum becomes insensitive when contacting the injected water, or the reservoir with low permeability expands reversely whilethe resistance of the injected water is substantially reduced, so that the pressure-reducing injection-increasing and plugging release of oil and gas field water injection wells is achieved.
Owner:BEIJING SHENGCHANG CENTURY PETROLEUM TECH
Method for reducing swell potential of expansive clayey soil with nano-level constitutive modeling
InactiveUS20170183568A1Reducing swell potentialWatering devicesContaminated soil reclamationSoil scienceCalcite
Owner:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Method for evaluating thickness of water film after water-phase imbibition flowback of gas reservoir rock containing expansive clay
PendingCN113514382AInhibition of hydrationReduce testing costsEarth material testingAnalysis using nuclear magnetic resonancePorosityClay minerals
The invention discloses a method for evaluating the thickness of a water film after water-phase imbibition flowback of gas reservoir rock containing expansive clay. The method comprises the following steps: determining the porosity of a rock core sample according to a pressure pulse method, and performing vacuum pressurization on the rock core sample to saturate absolute ethyl alcohol; performing nuclear magnetic resonance testing on the rock core sample to obtain a T2 map, performing inversion, and determining pore structure distribution data; drying the rock core sample, and carrying out a water phase imbibition flowback experiment on the dried rock core sample; performing a nuclear magnetic resonance test on the rock core sample after the water phase imbibition flowback experiment to obtain a T2 map, performing inversion, and determining the volume fraction of the water phase after imbibition flowback; and finally, determining the water film thickness after the water phase imbibition flowback according to the porosity of the rock core sample, the pore structure distribution data and the volume fraction of the water phase after the imbibition flowback. According to the method, ethanol is adopted as a saturated medium to measure the pore structure of the rock sample, hydration of clay minerals can be avoided, the pore structure of the rock is not damaged, the test cost is low, and operation is convenient, safe and efficient.
Owner:SOUTHWEST PETROLEUM UNIV
Use of iron ore agglomerates for acid gas removal
Owner:INTREVEP SA
Water stopping material for steel pipe pile cofferdam buckle
ActiveCN109372031ANot easy to seepageGood waterproofProtective foundationBulkheads/pilesCofferdamExpansive clay
The invention discloses a water stopping material for a steel pipe pile cofferdam buckle. The water stopping material comprises the following raw materials of, by weight, 90-110 parts of aggregate, 9-11 parts of expanded clay and 3-4 parts of a reinforcing material. The water stopping material is formed by mixing the aggregate, the expanded clay and the reinforcing material at a specific ratio, isused for the steel sheet pile cofferdam buckle, and has excellent water stopping effect, water seepage is not prone to occurring, application is convenient, the adhesiveness with the buckle is weak,the strength is low, and the water stopping material is easy and quick to remove in the later stage; and meanwhile, the raw materials are wide in source and low in cost is low, and the suitable waterstopping material is suitable for wide application in the construction industry.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD +1
Cosmetic Material Removing Agent and Cosmetic Material Removing Device
There is provided a cosmetic material removing agent including an expansive clay mineral and a dextrin fatty acid ester. There is provided a cosmetic material removing device including the cosmetic material removing agent as described above and a container for containing and feeding the cosmetic material removing agent.
Owner:SHISEIDO CO LTD
Use of iron ore agglomerates for acid gas removal
Owner:INTREVEP SA
Method of reducing the swelling capacity of clay-containing soil
PendingUS20220154072A1Decreased swelling capacityReduce capacityDrilling compositionOrganic fertilisersSoil scienceExpansive clay
A method and composition for reducing the swelling capacity of clay-containing soil, thus lowering volume change in soil, and thus enhancing the stability of soil, particularly expansive clay soil, in order that it is sufficiently stable, such that roads, pavements and some types of buildings and other structures can be securely constructed thereon. The method also minimizes any swelling and / or shrinkage in the soil under any such structures due to the movement of moisture in the soil, and thus minimizes damage and deterioration caused to such structures due to the presence of too much, or too little, water in the soil thereunder.
Owner:HAYWARD BAKER +1
A method for measuring the adsorption performance of machine-made sandstone powder
InactiveCN108645747BSimple requirementsLower requirementWeighing by removing componentExpansive clayStone dust
Owner:CHINA ACAD OF BUILDING RES +1
An anti-leakage composite barrier
ActiveCN104499510BSolve the problem of circumventionEasy constructionProtective foundationGeomembraneWater soluble
The invention discloses an anti-seepage composite barrier, which comprises an anti-bypass seepage part and an anti-seepage layer, wherein the anti-bypass seepage part comprises a water soluble polymer membrane and expansive clay, the expansive clay is packaged in the water soluble polymer membrane, a groove is formed in the surface of the anti-bypass seepage part, and the bottom part of the anti-seepage layer is embedded in the groove of the anti-bypass seepage part. The anti-seepage composite barrier has the advantages that the construction is simple, the anti-seepage effect is good, and the problem of bypass seepage at the connecting part of a HDPE (high-density polyethylene) geomembrane and an underground impervious layer is solved.
Owner:BEIJING GEOENVIRON ENG & TECH
A kind of concrete waste slurry concentrate suspension stabilizer and preparation method thereof
ActiveCN113800814BImprove stabilityImprove homogeneityCement productionPhosphoric Acid EstersCellulose
The invention discloses a suspension stabilizer for concrete waste slurry concentrate and a preparation method thereof, and belongs to the technical field of concrete waste slurry concentration. %, water-soluble carbohydrates 5-15%, cellulose ether derivatives 1-3%, glycerol 60-75%, phosphate esterification reagent 15-25%, deionized water 2-5% and catalyst 0.5-3% %. The present invention uses expansive clay, water-soluble sugars, cellulose ether derivatives, glycerol and phosphoric acid esterification reagents as main raw materials, and under the action of a catalyst, the concrete waste slurry is prepared through the esterification reaction of hydroxyl groups and phosphoric acid groups Concentrate suspension stabilizer; through the synergistic effect of each component, the stability and homogeneity of concrete waste slurry concentrate during storage and application are significantly improved, and the phenomenon of exudate stratification and compaction is reduced.
Owner:CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD +1
A structure and method for treating black cotton soil embankment with anti-seepage geotextile
The invention provides a structure and a method for processing a black cotton soil embankment with impervious geotextiles. The embankment structure comprises a geogrid gravelly soil base course, impervious geotextile edging and interlayer seepage-proofing layers, a black cotton soil fill stratum and a non-expansive clay top seal layer. The method comprises the following steps: (1) clearing a foundation; (2) setting out; (3) paving three layers of geogrid gravelly soil with the total thickness being 50cm; (4) spreading the impervious geotextiles on two sides of the road foundation, lapping the impervious geotextiles with filled soil by 250cm, turning up the impervious geotextiles on the slope of the road foundation, lapping the impervious geotextiles on the two sides in the middle of an embankment by 100cm after turning up, and bonding by using emulsified asphalt, wherein the lapping width of the adjacent impervious geotextiles is100cm and the impervious geotextiles are bonded by virtue of the emulsified asphalt; (5) spreading the soil and carrying out rolling construction; and (6) filling and rolling the top seal layer. The structure and the method disclosed by the invention are conducive to the stabilization of the embankment and are capable of preventing the embankment from deformation.
Owner:SOUTHEAST UNIV
Solid preparation for coating agent, and film and coated solid preparation formed from same
ActiveCN106456779AReduce hardnessReduce wearDigestive systemInorganic non-active ingredientsSolid componentWater soluble
The purpose of the present invention is to provide a coating agent and a film that is formed from the coating agent that impart gas barrier properties to a solid preparation while still ensuring fast disintegrability. The purpose of the present invention is also to provide a coated solid preparation wherein gas barrier properties and fast disintegrability are maintained and wherein cracks do not occur in a film under humidified conditions. The present invention provides a coating agent for a solid preparation, the coating agent including lactose and an expansive clay and not including a water-soluble polymer, the weight of the expansive clay being 20%-50% of the solid component weight.
Owner:TORAY IND INC
Weak expansive clay stratum subway station tunneling construction method
InactiveCN111997625AImprove carrying capacityClosed in timeUnderground chambersTunnel liningSupporting systemSubway station
The invention belongs to the technical field of tunnel engineering, and particularly relates to a weak expansive clay stratum subway station tunneling construction method. The method includes the steps of pilot tunnel construction, integral station supporting system construction, station body earth excavation and second lining structure construction. By adoption of the weak expansive clay stratumsubway station tunneling construction method, the condition of uplift deformation of the excavation face in the excavation process can be effectively restrained while the safe and smooth operation ofweak expansive clay stratum subway station tunneling construction is effectively guaranteed.
Owner:合肥市轨道交通集团有限公司
A kind of amphoteric-gemini type cationic composite adsorbent and preparation method thereof
ActiveCN103752274BIncrease organic carbon contentImprove adsorption capacityOther chemical processesWater contaminantsTO-18Betaine
The invention discloses an amphiprotic-Gemini type cationic composite adsorbent, and a preparation method thereof. The amphiprotic-Gemini type cationic composite adsorbent is an expansive clay mineral modified by an amphiprotic surfactant and a Gemini type cationic surfactant; the amphiprotic surfactant is alkyl dimethyl betaine, and alkyl carbon chain of alkyl dimethyl betaine possesses 10 to 18 carbon atoms; the Gemini type cationic surfactant is an alkyl quaternary ammonium gemini surfactant, and alkyl carbon chain of the alkyl quaternary ammonium gemini surfactant possesses 10 to 18 carbon atoms. Adsorption capacities of the amphiprotic-Gemini type cationic composite adsorbent obtained via modification on organic pollutants and heavy metal anions are improved, so that a problem that absorption capacity of amphiprotic organic modified soil on pollutants and heavy metal anions is poor is solved. The preparation method of the amphiprotic-Gemini type cationic composite adsorbent is simple, and operation is convenient.
Owner:NORTHWEST A & F UNIV
Method for regulating and controlling water and soil on basis of layered soil
InactiveCN110178475AImprove infiltration abilityReduce moisture contentSoil-working methodsVegetationLongest Diameter
The invention relates to a method for regulating and controlling water and soil on the basis of layered soil. The method is used for improving soil and specifically comprises the steps of digging sandditches in original soil, filling the sand ditches with sand, and covering the sand ditches filled with the sand with an expansive soil-stone mixed medium layer; the expansive soil-stone mixed mediumlayer comprises expansive clay and macadam; the sand ditches consist of sand soil, the sand soil is fine sand collected from a river channel or prepared artificially, the cross section of each sand ditch is elliptical, the long diameter of each sand ditch is 0.5-1 m, the short diameter of each sand ditch is 0.3-0.5 m, and the longitudinal section of each sand ditch is in an arc shape; every two adjacent sand ditches are formed in a wave line shape, and vegetation is planted on the original soil between every two adjacent sand ditches. The method can enhance the infiltration capacity of the soil and reduce the ineffective evaporation of the soil, thereby achieving the purpose of regulating and controlling the water and soil.
Owner:QINGHAI UNIVERSITY
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